Android studio 實作界面跳轉

Android studio 實作界面跳轉

标簽： 教育

主要大概實作的就是點選主界面的按鈕可以跳轉到指定界面

實作向10086打電話 發短信以及打開網頁打開地圖等功能

1.首先在activitiy_main.xml中設計主界面

代碼如下：<?xml version="1.0" encoding="utf-8"?>

界面實作結果：

2.接着建立一個activity_second.xml作為跳轉界面

界面代碼如下：

<?xml version="1.0" encoding="utf-8"?>

界面實作結果如下：

3. 接着在MainActivity中編寫界面跳轉功能

代碼如下：

package com.example.internetdemo;

import androidx.appcompat.app.AppCompatActivity;

import androidx.core.app.ActivityCompat;

import android.Manifest;

import android.content.Intent;

import android.content.pm.PackageManager;

import android.net.Uri;

import android.os.Bundle;

import android.provider.AlarmClock;

import android.view.View;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
}

public void click(View view) {
    switch (view.getId()){
        case R.id.btn_second:
            //根據Intent的action啟動Activity
            Intent  intent=new Intent();
            intent.setAction("com.example.SECOND_ACTIVITY");
            startActivity(intent);
            break;

        case R.id.btn_call:
            //根據Intent的Action啟動Activity
            callPhone();
             intent= new Intent(Intent.ACTION_DIAL);
            intent.setData(Uri.parse("tel:"+"10086"));
            startActivity(intent);

            break;
        case R.id.btn_message:
            sendMessage();
            break;
        case R.id.btn_browser:
            openBrowser();
            break;
        case R.id.btn_map:
            openMap();
            break;
        case R.id.btn_alarm:
            creatAlarm();
            break;
        case R.id.btn_textView:
            jumpSecond();
            break;    

    }

}

private void jumpSecond() {
    Intent intent=new Intent(MainActivity.this,SecondActivity.class);
    intent.putExtra("班級","軟體1811");
    //2.通過Bundle傳遞複雜類型：對象、對象集合
    Bundle bundle = new Bundle();
    bundle.putSerializable("user",new User("張三","13801234567"));
    intent.putExtras(bundle);
    //3.通過Bunle傳遞對象集合
    ArrayList<User> users=new ArrayList<User>();
    users.add(new User("a","13092746578"));
    users.add(new User("b","13065986578"));
    users.add(new User("c","13092741126"));
    bundle.putSerializable("users",users);

    intent.putExtras(bundle);
    startActivityForResult(intent,101);


}

private void callPhone() {
    Intent intent= new Intent(Intent.ACTION_DIAL);
    intent.setData(Uri.parse("tel:"+"10086"));
    //檢查運作時權限，若沒有則申請，然後在毀掉函數中完成打電話功能
    if(ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED){
        ActivityCompat.requestPermissions(MainActivity.this,new String[]{Manifest.permission.CALL_PHONE},
                1);
    }else{
        if(intent.resolveActivity(getPackageManager()) !=null){
            startActivity(intent);
        }
    }

}
           

//鬧鐘需要設定權限

private void creatAlarm() {

Intent intent=new Intent(AlarmClock.ACTION_SET_ALARM)

.putExtra(AlarmClock.EXTRA_MESSAGE,“起床”)

.putExtra(AlarmClock.EXTRA_HOUR,6)

.putExtra(AlarmClock.EXTRA_MINUTES,0);

if(intent.resolveActivity(getPackageManager()) != null){

startActivity(intent);

}

}

private void openMap() {
    Uri uri=Uri.parse("geo:0?q=1600+Amphitheatre_Parkway,+Mountain+View,+California");
    Intent intent=new Intent(Intent.ACTION_VIEW,uri);
    startActivity(intent);
}

private void openBrowser() {
    Intent intent= new Intent(Intent.ACTION_VIEW);
    intent.setData(Uri.parse("https://www.baidu.com"));
    startActivity(intent);
}

private void sendMessage() {
    Intent intent = new Intent(Intent.ACTION_SENDTO) ;
    intent.setData (Uri.parse ("smsto:10086"));
    intent.putExtra("sms_body","10086,你好");
    startActivity(intent);
}
           

}

4.接着在SecondActivity中編寫跳轉之後的代碼

代碼如下：

package com.example.internetdemo;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.TextView;

public class SecondActivity extends AppCompatActivity {

private TextView tvResult;

private EditText etPhone;

private User user;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_second);

tvResult = findViewById(R.id.btn_textView);
    etPhone=findViewById(R.id.et_phone);
    Intent intent = getIntent();
    String classmate = intent.getStringExtra("班級");
    String result = classmate;

    Bundle extras = intent.getExtras();
    if(extras!=null){
        User user=(User) extras.getSerializable("user");
        if(user!=null){
            result += ","+user.toString();
            tvResult.setText(user.getName());
            etPhone.setText(user.getPhone());
        }
    }
    //通過按鈕的事件監聽器
    Button btnConfirm=findViewById(R.id.confirm);
    btnConfirm.setOnClickListener(new View.OnClickListener(){

        @Override
        public void onClick(View v) {
            //擷取修改後的手機号，回傳給MainActivity
            String phone=etPhone.getText().toString();
            if(user !=null){
                user.setPhone(phone);
                Intent intent=new Intent();
                Bundle bundle=new Bundle();
                bundle.putSerializable("user",user);
                setResult(RESULT_OK,intent);
                SecondActivity.this.finish();
            }
        }
    });
    tvResult.setText(result);
}
           

}

5.當然我們還需要建一個User的java類

User代碼如下：

package com.example.internetdemo;

import java.io.Serializable;

public class User implements Serializable {

private int id;

private String name;

private String phone;

public User(){

}
public User(String name,String phone){

    this.name=name;
    this.phone=phone;
}

public int getId() {
    return id;
}

public void setId(int id) {
    this.id = id;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public String getPhone() {
    return phone;
}

public void setPhone(String phone) {
    this.phone = phone;
}
           

}

6.最後我們就可以在模拟器中運作啦

點選發短信會出現這樣的界面

點選打電話會出現這樣的界面

這個我就不一 一示範啦 簡單舉兩個例子

這樣我們就簡單完成一個小功能啦！！